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Study and application on precontrol of roof with sublevel subsequent filling technology for fractured wall rock |
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DOI:10.3969/j.issn.1671-4172.2018.04.004 |
KeyWord:fractured surrounding rock; precontrol of roof with sublevel subsequent filling method; filling ratio |
Author | Institution |
DONG Guoqiang |
(招金矿业股份有限公司大尹格庄金矿,山东 招远 ) |
LI Jiang |
(招金矿业股份有限公司大尹格庄金矿,山东 招远 ) |
ZHANG Hongwei |
(招金矿业股份有限公司大尹格庄金矿,山东 招远 ) |
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Abstract: |
In view of the difficulties in the poor stability of the fractured wall rock and the violent strata behaviors, precontrol of roof with sublevel subsequent filling method is proposed based on the existing mining technology in Dayingezhuang Gold Mine. On the basis of technical characteristics, construction technology and key technology, orthogonal experiment is used to optimize the ratio of filling material. Design of stope structural parameters by combining theoretical analysis with numerical simulation is optimized. Practice shows that this technology has been widely used in various mines, significant benefits. |
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